ClientHandshake to return AuthInfo

credentials/credentials.go

@@ -165,9 +165,7 @@ func (c *tlsCreds) ClientHandshake(ctx context.Context, addr string, rawConn net
 	case <-ctx.Done():
 		return nil, nil, ctx.Err()
 	}
-	// TODO(zhaoq): Omit the auth info for client now. It is more for
-	// information than anything else.
-	return conn, nil, nil
+	return conn, TLSInfo{conn.ConnectionState()}, nil
 }
 
 func (c *tlsCreds) ServerHandshake(rawConn net.Conn) (net.Conn, AuthInfo, error) {

credentials/credentials_test.go

@@ -34,7 +34,11 @@
 package credentials
 
 import (
+	"crypto/tls"
+	"net"
 	"testing"
+
+	"golang.org/x/net/context"
 )
 
 func TestTLSOverrideServerName(t *testing.T) {
@@ -59,3 +63,95 @@ func TestTLSClone(t *testing.T) {
 		t.Fatalf("Change in clone should not affect the original, c.Info().ServerName = %v, want %v", c.Info().ServerName, expectedServerName)
 	}
 }
+
+const tlsDir = "../test/testdata/"
+
+func TestTLSClientHandshakeReturnsAuthInfo(t *testing.T) {
+	lis, err := net.Listen("tcp", "localhost:0")
+	if err != nil {
+		t.Fatalf("Failed to listen: %v", err)
+	}
+	defer lis.Close()
+	serverTLS, err := NewServerTLSFromFile(tlsDir+"server1.pem", tlsDir+"server1.key")
+	if err != nil {
+		t.Fatalf("Failed to create server TLS. Error: %v", err)
+	}
+	var serverAuthInfo TLSInfo
+	done := make(chan bool)
+	go func() {
+		defer func() {
+			done <- true
+		}()
+		serverRawConn, err := lis.Accept()
+		if err != nil {
+			t.Fatalf("Server failed to accept connection: %v", err)
+		}
+		serverConn := tls.Server(serverRawConn, serverTLS.(*tlsCreds).config)
+		serverErr := serverConn.Handshake()
+		if serverErr != nil {
+			t.Fatalf("Error on server while handshake. Error: %v", serverErr)
+		}
+		serverAuthInfo = TLSInfo{serverConn.ConnectionState()}
+	}()
+	conn, err := net.Dial("tcp", lis.Addr().String())
+	if err != nil {
+		t.Fatalf("Client failed to connect to local server. Error: %v", err)
+	}
+	defer conn.Close()
+	c := NewTLS(&tls.Config{InsecureSkipVerify: true})
+	_, authInfo, err := c.ClientHandshake(context.Background(), lis.Addr().String(), conn)
+	if err != nil {
+		t.Fatalf("Error on client while handshake. Error: %v", err)
+	}
+	// wait until server has populated the serverAuthInfo struct.
+	<-done
+	if authInfo.(TLSInfo).State.Version != serverAuthInfo.State.Version {
+		t.Fatalf("c.ClientHandshake(_, %v, _) = %v, want %v.", lis.Addr().String(), authInfo, serverAuthInfo)
+	}
+}
+
+func TestTLSServerHandshakeReturnsAuthInfo(t *testing.T) {
+	lis, err := net.Listen("tcp", "localhost:0")
+	if err != nil {
+		t.Fatalf("Failed to listen: %v", err)
+	}
+	defer lis.Close()
+	serverTLS, err := NewServerTLSFromFile(tlsDir+"server1.pem", tlsDir+"server1.key")
+	if err != nil {
+		t.Fatalf("Failed to create server TLS. Error: %v", err)
+	}
+	var serverAuthInfo AuthInfo
+	done := make(chan bool)
+	go func() {
+		defer func() {
+			done <- true
+		}()
+		serverRawConn, err := lis.Accept()
+		if err != nil {
+			t.Fatalf("Server failed to accept connection: %v", err)
+		}
+		var serverErr error
+		_, serverAuthInfo, serverErr = serverTLS.ServerHandshake(serverRawConn)
+		if serverErr != nil {
+			t.Fatalf("Error on server while handshake. Error: %v", serverErr)
+		}
+	}()
+	conn, err := net.Dial("tcp", lis.Addr().String())
+	if err != nil {
+		t.Fatalf("Client failed to connect to local server. Error: %v", err)
+	}
+	defer conn.Close()
+	c := NewTLS(&tls.Config{InsecureSkipVerify: true})
+	clientConn := tls.Client(conn, c.(*tlsCreds).config)
+	err = clientConn.Handshake()
+	if err != nil {
+		t.Fatalf("Error on client while handshake. Error: %v", err)
+	}
+	authInfo := TLSInfo{clientConn.ConnectionState()}
+	// wait until server has populated the serverAuthInfo struct.
+	<-done
+	if authInfo.State.Version != serverAuthInfo.(TLSInfo).State.Version {
+		t.Fatalf("ServerHandshake(_) = %v, want %v.", serverAuthInfo, authInfo)
+	}
+
+}